Customs clearance at foreign post offices: procedural presentation, electronic declaration, verification, and secure movement requirements apply. Customs clearance at the foreign post office centralises authority in the proper officer, who must be presented with export goods and the corresponding electronic declaration on the PBE Automated System for screening, inspection and assessment. Packages may not be opened without the proper officer's permission; the officer may verify entries, request electronic clarifications or documents, and apply specified procedural substitutions from the Act. If goods are not prohibited and any duties and charges are paid, the proper officer may permit export clearance, and postal authorities must supply proof of export data and, when required, facilitate secure transfer to the booking post office.